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A multi-functional, blackboard technology, applied in the field of teaching tools, can solve the problem of non-occurrence, and achieve the effects of convenient use, easy promotion and reasonable design
Inactive Publication Date: 2013-08-07
XIAN AERONAUTICAL UNIV
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Abstract
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Embodiment 1
[0021] Such as figure 1 As shown, a novel negative pressure environment-friendly multifunctional blackboard includes a blackboard body, a dust removal device 16, a practical chalk box for color separation (red chalk box 9, white chalk box 10, magenta chalk box 11, yellow chalk box 12, green chalk box Box 13, blue chalk box 14), waste small chalk recycling box 7, switch panel 8, lighting lamp 17, hook 29, schedule holder 19, teaching aids collection box 20, suction nail collection box 22 and eraser collection box 21. The blackboard body is placed in the center, the dust removal device 16 is connected with the ventilation cavity 15 of the blackboard frame and placed on the upper right side of the blackboard, and the practical chalk box for color separation, waste small chalk recycling box 7, and switch panel 8 are arranged on the lower right side of the blackboard , illuminating lamp 17, hook 29 are arranged on the blackboard top, and schedule holder 19, teaching aids concentrat...
Embodiment 2
[0031] In this embodiment, the difference from Embodiment 1 is that the dust removal device 16 is connected to the ventilation cavity 15 of the blackboard frame and placed on the upper left side of the blackboard, the practical chalk box for color separation, the small waste chalk recycling box 7, and the switch panel 8 are arranged on the left side of the blackboard by the lower part, and the schedule folder 19, the teaching aid concentration box 20, the suction nail concentration box 22 and the blackboard eraser concentration box 21 are placed on the right side of the blackboard. In this embodiment, the structures and installation positions of other parts are the same as those in Embodiment 1.
Embodiment 3
[0033] In this embodiment, the difference from Embodiment 1 and Embodiment 2 is that there are two sets of dust removal devices 16, which are respectively installed on the left and right sides of the blackboard, and two ventilation chambers 15 are provided on the frame of the blackboard, respectively and corresponding The dust removal device 16 is connected. In this embodiment, the structures and installation positions of other parts are the same as those in Embodiment 1.
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Abstract
The invention discloses a novel negative pressure environmentally-friendly multi-functional blackboard which comprises a blackboard body, a dust removal device, a practical color separation chalk box, a waste small chalk recovery box, a switch panel, a head lamp, a schedule clip, a teaching aid collection case, an absorption nail collection box and an eraser collection box. The blackboard body is provided with a negative pressure cavity composed of a frame, a blackboard surface with small holes arranged in lattice, a blackboard backing board and a division bar in the cavity together. By means of adsorption force of a fan of the dust removal device, dust is absorbed, dust-free environment of chalk writing and erasing is achieved, and health of teachers and students is protected. The small holes arranged on the blackboard surface in a lattice mode are convenient for the teachers to write on the blackboard neat and orderly, are convenient for ruler and compass construction and wall chart adsorption, and can also reduce reflection light of the blackboard surface. The blackboard achieves that chalk of various colors is placed in the practical chalk box and is convenient to take. Cracked and used waste small chalk is put in the chalk recovery box and is convenient to recycle, and environmental protection is reduced. The blackboard achieves classification placement and convenient pick-and-place of a schedule, teaching aids, adsorption nails, an eraser and the like.
Description
technical field [0001] The invention relates to the field of teaching appliances, in particular to a novel negative pressure environment-friendly multifunctional blackboard. Background technique [0002] So far, the vast majority of teachers have to use chalk and blackboards in their lectures. When writing with chalk or when wiping the blackboard, chalk dust will fly everywhere, which not only pollutes the environment in the classroom, but also affects the health of teachers and students. Bad influence is produced on health, and the chalk of fracture and remaining chalk tip are discarded at random in the chalk box, on the desk, on the floor or on the lower edge of the blackboard, which easily causes secondary environmental pollution. Secondly, there is no reference object on the surface of the current blackboard. It is easy to deviate when writing. Affect the overall aesthetics of blackboard writing. Thirdly, chalks of various colors are not neatly stacked because they are...
Claims
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Application Information
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